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High-temperature wear-resistant metal-based self-lubricating bearing with lubricating layer and preparation method thereof

A technology for lubricating bearings and lubricating layers, applied in the field of high-temperature wear-resistant metal-based self-lubricating bearings and its preparation, can solve problems such as the reduction of solid lubricant content, the impact on the service life of high-temperature-resistant bimetallic bearings, and bearing wear, and achieve self-lubricating Improvement of lubricating performance, reduction of friction coefficient and reduction of friction loss

Active Publication Date: 2022-04-01
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the prolongation of use time, the content of solid lubricants decreases, which will eventually lead to serious wear of the bearings, which in turn affects the service life of high temperature resistant bimetallic bearings

Method used

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  • High-temperature wear-resistant metal-based self-lubricating bearing with lubricating layer and preparation method thereof
  • High-temperature wear-resistant metal-based self-lubricating bearing with lubricating layer and preparation method thereof
  • High-temperature wear-resistant metal-based self-lubricating bearing with lubricating layer and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0030] The preparation method of the above-mentioned high-temperature wear-resistant metal-based self-lubricating bearing with a lubricating layer comprises the following steps:

[0031] S1. Weigh the raw materials in the following mass percentages: Cu 75%~80%, C 0.3%~0.5%, Cr 14%~16%, S 0.2%~0.5%, Mo 0.4%~0.6%, Mn 5.1%~ 10%; Mix the weighed raw materials evenly and set aside;

[0032] Weigh Nb 4 C 3 , and added to liquid paraffin, dispersed evenly, to prepare lubricating liquid;

[0033] Process the C45 steel pipe with an outer diameter of 8cm and a thickness of 1cm into a seamless steel pipe sleeve with a height of 4cm;

[0034] S2. Put the raw material mixed in S1 into a high-hardness ring-shaped abrasive tool and press it at a pressure of 200-300 MPa. After demolding, a ring-shaped friction layer is obtained;

[0035] S3, putting the S2 annular friction layer into the S1 seamless steel sleeve to prepare a blank assembly, the gap between the annular friction layer and t...

Embodiment 1

[0040] A high-temperature wear-resistant metal-based self-lubricating bearing with a lubricating layer, comprising a steel matrix and a friction layer located inside the matrix, the friction layer is made of the following components in mass percentages: Cu75%, C 0.5%, Cr 16%, S0.5%, Mo 0.6%, Mn 7.4%. The steel matrix and the friction layer are covered with a lubricating layer, and the lubricating layer is made of the following components: liquid paraffin, Nb 4 C 3 , and the Nb 4 C 3 The amount added is 10% of the liquid paraffin mass.

[0041] The preparation method of the above-mentioned high-temperature wear-resistant metal-based self-lubricating bearing with a lubricating layer comprises the following steps:

[0042] S1. Weigh the raw materials in the following mass percentages: Cu75%, C 0.5%, Cr 16%, S 0.5%, Mo0.6%, Mn 7.4%; mix the weighed raw materials evenly and set aside; weigh Nb 4 C 3 , and added to liquid paraffin, dispersed evenly, to prepare lubricating liqu...

Embodiment 2

[0049] A high-temperature wear-resistant metal-based self-lubricating bearing with a lubricating layer, comprising a steel matrix and a friction layer located inside the matrix, the friction layer is made of the following components in mass percentages: Cu 80%, C 0.3%, Cr 14%, S0.2%, Mo 0.4%, Mn 5.1%. The steel matrix and the friction layer are covered with a lubricating layer, and the lubricating layer is made of the following components: liquid paraffin, Nb 4 C 3 , and the Nb 4 C 3 The amount added is 20% of the liquid paraffin quality.

[0050] The preparation method of the above-mentioned high-temperature wear-resistant metal-based self-lubricating bearing with a lubricating layer comprises the following steps:

[0051] S1. Weigh the raw materials in the following mass percentages: Cu 80%, C 0.3%, Cr 14%, S 0.2%, Mo0.4%, Mn 5.1%; mix the weighed raw materials evenly, and set aside; weigh Nb 4 C 3 , and added to liquid paraffin, dispersed evenly, to prepare lubricatin...

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Abstract

The invention discloses a high-temperature wear-resistant metal-based self-lubricating bearing with a lubricating layer and a preparation method of the high-temperature wear-resistant metal-based self-lubricating bearing, and belongs to the technical field of bearing materials, the high-temperature wear-resistant metal-based self-lubricating bearing comprises a steel base body and a friction layer located on the inner side, and the friction layer is prepared from, by mass, 75%-80% of Cu, 0.3%-0.5% of C, 14%-16% of Cr, 0.2%-0.5% of S, 0.4%-0.6% of Mo and 5.1%-10% of Mn; the steel base body and the friction layer are further coated with a lubricating layer, the lubricating layer is prepared from liquid paraffin and Nb4C3, and the adding amount of the Nb4C3 is 10%-20% of the mass of the liquid paraffin. The composition of a traditional copper-based friction layer is improved, that is, C, Cr, S, Mo and Mn are added into Cu, so that the bearing is resistant to high temperature and good in self-lubricating performance in the using process, and the friction coefficient of the bearing is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of bearing materials, and in particular relates to a high-temperature wear-resistant metal-based self-lubricating bearing with a lubricating layer and a preparation method thereof. Background technique [0002] Bimetallic self-lubricating bearings include a matrix and a friction layer. The matrix material is generally low-carbon cold-rolled steel plate, and the friction layer material is generally bronze powder, which contains solid lubricants. When the bearing starts to run, the copper alloy in the friction layer begins to wear, at this time, the solid lubricant is released from the copper alloy layer and forms a solid lubricating film, thereby reducing bearing wear. However, with the prolongation of the service time, the content of solid lubricant decreases, which will eventually lead to serious wear of the bearing, which in turn affects the service life of the high temperature resistant bimetallic bearing...

Claims

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Application Information

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IPC IPC(8): C22C9/00F16C33/10B22F1/10B22F3/02B22F3/10B22F3/26B22F5/10
CPCY02T10/86
Inventor 许春霞刘莹胡瑞万亚玲张涵陈威韩文彬刘朕
Owner NANCHANG UNIV
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